285828167641 has 3 divisors (see below), whose sum is σ = 285828702271. Its totient is φ = 285827633012.

The previous prime is 285828167633. The next prime is 285828167657. The reversal of 285828167641 is 146761828582.

The square root of 285828167641 is 534629.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 36168052041 + 249660115600 = 190179^2 + 499660^2 .

It is not a de Polignac number, because 285828167641 - 2³ = 285828167633 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285828167341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 267315 + ... + 801943.

Almost surely, 2^285828167641 is an apocalyptic number.

285828167641 is the 534629-th square number.

285828167641 is the 267315-th centered octagonal number.

It is an amenable number.

285828167641 is a deficient number, since it is larger than the sum of its proper divisors (534630).

285828167641 is an frugal number, since it uses more digits than its factorization.

285828167641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069258 (or 534629 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 58.

The spelling of 285828167641 in words is "two hundred eighty-five billion, eight hundred twenty-eight million, one hundred sixty-seven thousand, six hundred forty-one".